Light
... any scientist. 3. Developing scientific knowledge requires hard work often building upon the hard work of others. 4. Scientific knowledge may be durable but is subject to change. Changes may sometimes be revolutionary. The significance of this package is that it uses both traditional and innovative ...
... any scientist. 3. Developing scientific knowledge requires hard work often building upon the hard work of others. 4. Scientific knowledge may be durable but is subject to change. Changes may sometimes be revolutionary. The significance of this package is that it uses both traditional and innovative ...
(ATP). - WordPress.com
... This process in living things begins with glycolysis. If oxygen is present, glycolysis is followed by the Krebs Cycle and electron transport chain – This is called Cellular Respiration ...
... This process in living things begins with glycolysis. If oxygen is present, glycolysis is followed by the Krebs Cycle and electron transport chain – This is called Cellular Respiration ...
Latent fingermark detection using amino acid sensitive reagents
... Introduction The use of amino acid sensitive reagents for the detection of latent fingermarks is a valid technique in forensic chemistry. ...
... Introduction The use of amino acid sensitive reagents for the detection of latent fingermarks is a valid technique in forensic chemistry. ...
Reflection and Refraction
... Now repeat your calculation for an air to glass boundary. When light hits a medium with a higher refractive index: ni ...
... Now repeat your calculation for an air to glass boundary. When light hits a medium with a higher refractive index: ni ...
Words - The Physics Teacher
... Obviously I believe that the syllabus is partly responsible for this miscarriage of justice, but textbooks play their part also, paying at most little more than lip-service to the wonder that permeates through the very pores of this topic. I’m not sure whether we as teachers make up for this terribl ...
... Obviously I believe that the syllabus is partly responsible for this miscarriage of justice, but textbooks play their part also, paying at most little more than lip-service to the wonder that permeates through the very pores of this topic. I’m not sure whether we as teachers make up for this terribl ...
images in plane mirrors
... Read pages 496 - 500 There are two types of curved mirrors, both shaped like a section of a spherical surface: ...
... Read pages 496 - 500 There are two types of curved mirrors, both shaped like a section of a spherical surface: ...
Bioluminescence
Bioluminescence is the production and emission of light by a living organism. It is a form of chemiluminescence. Bioluminescence occurs widely in marine vertebrates and invertebrates, as well as in some fungi, microorganisms including some bioluminescent bacteria and terrestrial invertebrates such as fireflies. In some animals, the light is produced by symbiotic organisms such as Vibrio bacteria.The principal chemical reaction in bioluminescence involves the light-emitting pigment luciferin and the enzyme luciferase, assisted by other proteins such as aequorin in some species. The enzyme catalyzes the oxidation of luciferin. In some species, the type of luciferin requires cofactors such as calcium or magnesium ions, and sometimes also the energy-carrying molecule adenosine triphosphate (ATP). In evolution, luciferins vary little: one in particular, coelenterazine, is found in nine different animal (phyla), though in some of these, the animals obtain it through their diet. Conversely, luciferases vary widely in different species. Bioluminescence has arisen over forty times in evolutionary history.Both Aristotle and Pliny the Elder mentioned that damp wood sometimes gives off a glow and many centuries later Robert Boyle showed that oxygen was involved in the process, both in wood and in glow-worms. It was not until the late nineteenth century that bioluminescence was properly investigated. The phenomenon is widely distributed among animal groups, especially in marine environments where dinoflagellates cause phosphorescence in the surface layers of water. On land it occurs in fungi, bacteria and some groups of invertebrates, including insects.The uses of bioluminescence by animals include counter-illumination camouflage, mimicry of other animals, for example to lure prey, and signalling to other individuals of the same species, such as to attract mates. In the laboratory, luciferase-based systems are used in genetic engineering and for biomedical research. Other researchers are investigating the possibility of using bioluminescent systems for street and decorative lighting, and a bioluminescent plant has been created.